Binder assisted self-assembly of graphene oxide/Mn2O3 nanocomposite electrode on Ni foam for efficient supercapacitor application

Han, Hoseong; Sial, Qadeer Akbar; Kalanur, Shankara S.; Seo, Hyngtak

doi:10.1016/j.ceramint.2020.03.111

Cited by 29 publications

(6 citation statements)

References 48 publications

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“…There might be some reasons behind high capacitance of the composite with 1:3 in comparison to 1:1 and 1:2. For instance, a large surface area is resulted when the ratio of graphene is increased and also the unique structural properties of graphene results into more accumulation of electrolytes which resultantly exhibit high capacitance ( Han et al, 2020 ).…”

Section: Resultsmentioning

confidence: 99%

“…This slurry of the composite material was then transferred into a glass tube and sonicated for 15 min. The substrate was inserted into the slurry and sonicated for 10 min such that the pores of the Ni foam ( Han et al, 2020 ; Rabani et al, 2020 ) uniformly filled with the slurry. The substrate was then dried for 1 h in an oven.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, studies have been carried out for the development of low-cost alternative materials ( Nithya et al, 2015 ) such as manganese oxide and iron oxide as a substitute for ruthenium oxides ( Zhi et al, 2013 ). In previous studies, high-cost and complex methods were used to get the desired capacitance for graphene oxide/Mn 2 O 3 composite electrode on Ni foam, while in the present study effective and simple techniques are used to get the valuable electrochemical results ( Han et al, 2020 ). The high specific capacitance and environment friendly behavior of Mn 2 O 3 attracted much attention of the researcher to use it for supercapacitors.…”

Section: Introductionmentioning

confidence: 94%

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Facile Synthesis and Electrochemical Studies of Mn2O3/Graphene Composite as an Electrode Material for Supercapacitor Application

Mustafa¹,

Mehboob

Khisro³

et al. 2021

Front. Chem.

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A simplified sol-gel method that can be scaled up for large-scale production was adopted for the preparation of manganese oxide nanocrystals. Prepared Mn2O3 exhibited micron-sized particles with a nanoporous structure. In the present study, a simple and low-cost strategy has been employed to fabricate nanoporous Mn2O3 with an increased surface area for an electrode/electrolyte interface that improved the conduction of Mn2O3 material. The crystal phase and morphology of the prepared material was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). The prepared electrode materials were deposited on a nickel foam substrate to investigate the electrochemical properties. The galvanostatic charge/discharge (GCD), cyclic voltammetry (CV), and complex impedance studies confirmed excellent specific capacitance and capacitive behavior of the prepared material. The synthesized Mn2O3/graphene composites exhibited an excellent specific capacitance of 391 F/g at a scan rate of 5 mV/S. Moreover, a specific capacitance of 369 F/g was recorded at a current density of 0.5 A/g using the galvanostatic charge/discharge test. The high porosity of the materials provided a better electrolyte-electrode interface with a larger specific area, thus suggesting its suitability for energy storage applications.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

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Facile Synthesis and Electrochemical Studies of Mn2O3/Graphene Composite as an Electrode Material for Supercapacitor Application

Mustafa¹,

Mehboob

Khisro³

et al. 2021

Front. Chem.

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“…The presumable mechanism of this redox peak is associated with the reaction of Mn 3+ /Mn 4+ (Eq. 2) (Han et al, 2020). The effect of the scan rate on the redox peak current increment has also been detected.…”

Section: Characterizationmentioning

confidence: 95%

Synergetic and charge transfer properties of a metal oxide heterojunction: Photocatalytic activities

Abebe

2022

Front. Catal.

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Improvement in the synthesis techniques and their optimum properties to be up-to-date is the global need for industrially scalable applications. The sol–gel solution combustion synthesis (SG-SCS) approach is an easy, time-/energy-efficient, and creates regularly ordered porous materials that have significance in the ion-/mass-transport phenomenon. Furthermore, the approach also yields a decent heterojunction once optimized via the HSAB theory. Forming a heterojunction also tunes the crucial properties of the materials, thus, boosting the photocatalytic ability through charge transfer or/and synergistic roles. From the stability investigation results, the calcination temperature of 500°C is determined to be ideal. The X-ray diffraction and high-resolution transmission electron microscopy (HRTEM) techniques confirmed the nanoscale size of the NPs and NCs. The porous nature of the materials is revealed from the scanning electron microscopy micrographs and BET analysis; consistent results are also noted from selected area electron diffraction and HRTEM. The detected stacking faults on the IFFT image of HRTEM also confirmed the porous properties of the NCs. The precise elemental composition and local heterojunction within Zn/Fe(III)/Mn(III) oxides were confirmed in the HRTEM, X-ray photoelectron spectroscopy, and energy-dispersive X-ray studies. The significant charge transfer capability of the NCs more than bare ZnO was evidenced from the electrochemical analysis. The NCs were also effective on acid orange 8 (AO8) and Congo red (CR) dye degradations.

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“…Graphene oxide (GO) is a unique chemical characterized by its structure, which can be conceptualized as a monomolecular layer of graphite. This layer is distinguished by the presence of various oxygen-containing functional groups [85,86]. Graphene oxide is the oxidized form of graphene, a monolayered material consisting of carbon atoms in-terconnected in a hexagonal lattice.…”

Section: Graphene Oxide-based Electrode Materialsmentioning

confidence: 99%

Advancement in Supercapacitors for IoT Applications by Using Machine Learning: Current Trends and Future Technology

Sial,

Safder,

Iqbal

et al. 2024

Sustainability

Self Cite

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Supercapacitors (SCs) are gaining attention for Internet of Things (IoT) devices because of their impressive characteristics, including their high power and energy density, extended lifespan, significant cycling stability, and quick charge–discharge cycles. Hence, it is essential to make precise predictions about the capacitance and lifespan of supercapacitors to choose the appropriate materials and develop plans for replacement. Carbon-based supercapacitor electrodes are crucial for the advancement of contemporary technology, serving as a key component among numerous types of electrode materials. Moreover, accurately forecasting the lifespan of energy storage devices may greatly improve the efficient handling of system malfunctions. Researchers worldwide have increasingly shown interest in using machine learning (ML) approaches for predicting the performance of energy storage materials. The interest in machine learning is driven by its noteworthy benefits, such as improved accuracy in predictions, time efficiency, and cost-effectiveness. This paper reviews different charge storage processes, categorizes SCs, and investigates frequently employed carbon electrode components. The performance of supercapacitors, which is crucial for Internet of Things (IoT) applications, is affected by a number of their characteristics, including their power density, charge storage capacity, and cycle longevity. Additionally, we provide an in-depth review of several recently developed ML-driven models used for predicting energy substance properties and optimizing supercapacitor effectiveness. The purpose of these proposed ML algorithms is to validate their anticipated accuracies, aid in the selection of models, and highlight future research topics in the field of scientific computing. Overall, this research highlights the possibility of using ML techniques to make significant advancements in the field of energy-storing device development.

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Binder assisted self-assembly of graphene oxide/Mn2O3 nanocomposite electrode on Ni foam for efficient supercapacitor application

Cited by 29 publications

References 48 publications

Facile Synthesis and Electrochemical Studies of Mn2O3/Graphene Composite as an Electrode Material for Supercapacitor Application

Facile Synthesis and Electrochemical Studies of Mn2O3/Graphene Composite as an Electrode Material for Supercapacitor Application

Synergetic and charge transfer properties of a metal oxide heterojunction: Photocatalytic activities

Advancement in Supercapacitors for IoT Applications by Using Machine Learning: Current Trends and Future Technology

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